Synology DX1222 12-Bay Expansion Unit
Brand: Synology | Category: Storage Systems
SKU: DX1222 | Part #: DX1222 | MPN: DX1222
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About the Synology DX1222 12-Bay Expansion Unit
The Synology DX1222 is a 12-bay rackmount expansion enclosure engineered to scale storage capacity for enterprise Synology NAS systems. It connects via SAS or iSCSI to compatible host NAS units, enabling organizations to expand validated storage pools without introducing additional management complexity. The unit supports mixed drive types and leverages the host NAS's RAID engine, snapshots, and replication capabilities.
Designed for data-intensive enterprise environments, the DX1222 provides dense, high-availability storage expansion within a compact 2U form factor. It integrates seamlessly with Synology's DSM operating system ecosystem, maintaining unified backup policies, tiered storage strategies, and disaster recovery workflows across the expansion infrastructure.
Ideal for
- Backup and archive capacity expansion for mid-market and enterprise data centers
- Tiered storage pools for video surveillance and media asset management systems
- High-capacity storage scaling for virtualization and hyper-converged environments
- Multi-tenant storage isolation for managed service providers and hosting platforms
- Cold storage tier expansion for hybrid backup-to-disk strategies
- Capacity growth for enterprise file services without NAS replacement cycles
Technical specifications
| Manufacturer | Synology |
| Model | DX1222 |
| Part Number | DX1222 |
| Form Factor | 2U Rackmount |
| Drive Bays | 12 |
| Supported Drive Types | 3.5" HDD, 2.5" HDD, 2.5" SSD |
| Maximum Drive Capacity | 132 TB (11 × 12 TB per bay, aggregate) |
| Expansion Interface | SAS, iSCSI |
| Cooling | Multiple hot-swap fans |
| Power Supply | Redundant PSU (internal details per spec sheet) |
| Physical Dimensions | 483.6 mm (W) × 88.3 mm (H) × 652.5 mm (D) |
| Weight (Empty) | Approximately 40 kg |
| Operating Temperature | 0 to 40°C |
| Storage Protocol Support | SAS protocol, IP-based iSCSI over Ethernet |
| Compatibility | Synology NAS running DSM 7.0 or later |
| Vibration Tolerance | IEC 60068-2-6 per enterprise standards |
| Launch | 2024-Q4 |
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Technical Specifications
| Brand | Synology |
| Category | Storage Systems |
| SKU | DX1222 |
| Part Number | DX1222 |
| Condition | New |
| Model | DX1222 |
| Form Factor | 2U Rackmount |
| Drive Bays | 12 |
| Supported Drive Types | 3.5" HDD, 2.5" HDD, 2.5" SSD |
| Maximum Drive Capacity | 132 TB (11 × 12 TB per bay, aggregate) |
| Expansion Interface | SAS, iSCSI |
| Cooling | Multiple hot-swap fans |
| Power Supply | Redundant PSU (internal details per spec sheet) |
| Physical Dimensions | 483.6 mm (W) × 88.3 mm (H) × 652.5 mm (D) |
| Weight (Empty) | Approximately 40 kg |
| Operating Temperature | 0 to 40°C |
| Storage Protocol Support | SAS protocol, IP-based iSCSI over Ethernet |
| Compatibility | Synology NAS running DSM 7.0 or later |
| Vibration Tolerance | IEC 60068-2-6 per enterprise standards |
| Launch | 2024-Q4 |
Frequently Asked Questions about Synology DX1222 12-Bay Expansion Unit
What does the Synology DX1222 12-Bay Expansion Unit do?
the Synology DX1222 12-Bay Expansion Unit suits enterprise data-center storage tiers — all-flash arrays, hyperconverged storage pools (vSAN, Ceph), database backends, and high-throughput backup repositories. It is supported by major server platforms.
What are the headline specs of the Synology DX1222 12-Bay Expansion Unit?
Key specifications for the Synology DX1222 12-Bay Expansion Unit: new condition; manufacturer Synology; model DX1222; part number DX1222; form factor 2U Rackmount; drive bays 12; supported drive types 3.5" HDD, 2.5" HDD, 2.5" SSD. Manufacturer part number DX1222. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.